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Unformatted text preview: 4 = 3353, h 5 = 3101, h 6 = 2428, h 7 = 174, h 8 = 175, h 9 = 561, h 10 = 570, h 11 = 882, h 12 = 909, h 13 = 909. Assuming a total steam mass flow rate of 1 kg/s running through the cycle, calculate the mass flow rates of steam extracted from the turbine and diverted to the closed heater (y’) and to the open heater (y’’). Also, determine the cycle thermal efficiency if the net cycle power is known to be 1286 kW. 3. A moist air stream enters a steady-flow mixing chamber at state 1: 10 ºC, 10% relative humidity, and 1 m 3 /s volumetric flow rate. A second airflow also enters the unit at state 2: 20 ºC, 20% relative humidity, and 2 m 3 /s volumetric flow rate. After the mixing process, the mixture is then heated and added liquid water at 10 ºC at a rate of 200 kg/hr at state 3. A single flow exits the atmospheric-pressure a/c system at 40 ºC at state 4. Calculate the relative humidity of the exit flow at state 4 and the rate of heat transfer to the unit....
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This note was uploaded on 02/01/2012 for the course MECH ENG 225 taught by Professor Koylu during the Spring '11 term at Missouri S&T.
- Spring '11